Thanks Laurie, the USB controllers are on the motherboard and I haven't
upgrade the BIOS. I am not using an external hub. One of the devices,
however, is a 6-in-1 card reader that connects to on of the internal USB
connectors. Currently, USB devices total 4 - Epson 1640 Scanner, Epson
1200 printer, the 6-in-1 card reader, and a pointing device
(trackball). I was advised by manufacturers of trackballs that I have
to use the USB port rather than the PS-2 port. The trackballs did not
perform well when I used the PS-2 port.
I am using the latest device drivers that are available and I will
upgrade the BIOS for my motherboard.
Thanks again,
Jim Sims
Laurie Solomon wrote:
>First are your USB controllers on your motherboard or are they addin PCI
>adapter cards? If the first, you may need to upgrade your BIOS for your
>motherboard; or you could install a PCI USB adapter card in an open PCI slot
>which would avoid the motherboard controllers and BIOS.
>
>Secondly, are you connecting your deviceds directly to the USB sockets in
>the computer or are you using a USB hub; and if you are using a hub is it a
>passive hub or an independently selfpowered active hub. Here powered hubs
>are preferable to unpowered hubs, and direct connection is preferable to
>connection via a hub.
>
>Thirdly, are you using the latest drivers for all the USB devices and
>controllers and how many of what do you have connected to any given
>controller?
>
>filmscanners_owner@halftone.co.uk wrote:
>
>
>>I am having an annoying problem with my scanners and card readers
>>interfacing with my computer. Often, but not every time, when I turn
>>off one of my devices or remove a media card from a card reader I
>>encounter an alert to "eject or unplug the device" under penalty of an
>>unstable system. I would not mind doing this but in order to bring
>>the device back on line I must restart the computer and, in the case
>>of my Epson scanner (USB interface), I have had to uninstall and
>>reinstall the drivers. I have a 6in1 internal card reader that, once
>>"ejected or unplugged", won't come back without a system restart.
>>The only devices that do not cause any problem are the Epson printer
>>(USB) and Polaroid 120 scanner (Firewire).
>>
>>Has anyone else had this problem and, if so, is there a remedy?
>>
>>Thanks in advance,
>>
>>Jim Sims
>>
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